Relief-valve.



C. P. WHITE. RELIEF VALVE. APPLICATION FILED SEPT. 13, 1910.

Patented Apr. 16, 1912.

Valves, of which the to in'the followin 'ingl on its opposite side.-

rates the chamber 3 outlet nipple 6,

UNITED STATES PATENT OFFICE.

CHARLES E. WHITE, OF GREENSBORO, NORTH CAROLINA.

RELIEF-VALVE.

Application filed September 13, 1910.

To all whom it may concern:

Be it known that I, CHARLES '1. WHITE, citizen of the United States, residing at Greensboro, State of North Carolina, have invented certain new and useful Improvements in Relieffollowing is a specification.

This invention comprehends certain new and useful improvements in relief valves for discharging from locomotive engine or other steamcylinders, the water of condensation automaticallywithout any appreciable waste of steam under pressure, and the invention has for its object a simple construction of valve of this character, the parts of which are few in number and not liable to get out of order..

With this and other objects in view as will more fully appear as the description proceedsythe invention consists in certain constructions; arrangements and combinations of the p'arts that I shall hereinafter fully describe and claim.

7 For afull understanding of the invention, reference is to be had to scriptionand-accompanying drawings, in

which Figure 1 is a longitudinal sectional view of an engine cylinder equipped with my improved relief valves and,'Fig. 2 is an enlarged sectional .viewwf: ,the .valve.

' Corresponding and lik'e parts-are fefer red description and inditfated in all the views 0 'thedraw'ings-by th reference characters? My improved relief .valve comprises a body portion 'or case threaded at one end to receive a nipple 2 which may be either straight or cylinder with the valve standing either in a vertical or a horizontal position. The casis provided at its end next to the nipple 2 with a condensation chamber 3 which is bounded on one side by a transversely extending partition 4 which sepafrom the fi'uid outlet the latter being provided with an as clearly illustrated in the drawing. The fluid outlet chamber 5 is bounded on one side by the partition 4 and by. a corresponding partition 'Z separating said chamber from a cylind'rical chamber 8-. in which a ,piston9 is mounted. 'llhe adjoining end of thecasing chamber 5,

Specification of Letters Patent.

in the county of Guilford and the following ,de-

. stance,

-1 which is preferably.

. establishing expansion of Patented Apr. 16, 1912. Serial No. 581,899.

1 is closed, as by the screw cap 10, and is provided, preferably at diametrically opposite points, with ports 11 leading into the chamber 8 on the lower or outer side of the piston 9. The piston is preferably formed with a nib 12 designed to abut against the screw cap 10 so as to limit the movement of the piston in one direction, such movement being stopped at a point before the piston 9 can close the ports 11 The partition 4 is formed with a preferably beveled centrally disposed opening 13 designed to establish communication between the chambers 3 and 5, and said opening forms a valve seat for a normally closed turbinate valve 14. This valve is Provided with guide stei'ns 15 and 16, one "ofthese being branched, as at 17 to work in the nipple 2, while the other stem 16) works in an opening and passes through said opening into the chamber 8 where it is designed for engagement by the piston 9. In carrying out my invention, any desired number of the relief valves may be employed in connection with the engine cylinder to be drained, and each 18 formed in the partition 7 valve is secured to the cylinder by a nipple such asindicated at 2, as hereinbefore' stated. One of the ports 11 is piped to some source of supplyof fluid pressure under the control of the engineer in the locomotive cab for inwhile the other port- 11 may either be plugged, if not desired for use, or may be used to connect its relief valve with others like it.

From the foregoing description in connection with the accompanying drawing, the operation of my improved reliefvalve will be apparent. The valve 14 ,is normally closed and is maintained in closed position so long as the engine .is' running. lVhenever the engine stops, it is only necessary for the engineer to turn live steam or other fluid pressure into' the chamber. 8 underneath the piston 9, whereby the piston, by engagement with the guide stem 15 of the valve 14:, will move said valve off of its seat 13, thereby communication between the con-. densation chamber 3 and the fluid outlet chamber 5 and permitting the fluid to flow. out ofthe latter. It will thus be seen that the cylinder can be water of condensation, all the space-within the cylinder being maintained for the full the steam v I Preferably,

ts I

kept practically free of i the screw cap 10 carries a 

